Automatic locking device for doors, &amp; c.



Patented July 23, I901. A. HELLER.

AUTOMATIC LOCKING DEVICE FOR DOORS, 8w.

(Applxcatwn med se z 29, 1900 Y ytwnz'az m: "cums mam cavwuurm. wnsumo'rcn. n. c.

UNITED STATES PATENT: QFFIQE.

AUGUST HELLER, OF GRAZ, AUSTRIA-HUNGARY.

AUTOMATIC LOCKING DEVICE FOR DOORS, 800.-

SPEOIFIGATION formingpart of Letters Patent No. 679,023, dated July 23, 1901. Application filed September 29, 1900. Serial No. 31,552. (No model.)

To all whom it may concern:

Be it known that 1, AUGUST HELLER, rentowner, a citizen of Austria, residing at Graz,

Province of Styria, Austria-Hungary, have invented certain new and useful Improvements in Automatical Locking Devices for Doors, 850., and all Kinds of Roller-Doors, of which the following is a specification.

The present invention relates to a locking device for doors and window-leaves and all kinds of roller-doors; and the object is to provide a simple and efficient mechanism of the character described which will also be inexpensive in construction. I

In the accompanying drawings such a looking device for windows, with leaves turnable in pivots, is represented in Figure 1. in front View, and in Fig. 2 in side view, vertically sectioned.

at is a suitably-shaped lever rotatable on a pin 2) in the direction of the path of the leaves. This lever is provided on its shorter arm with a pulley C, guided in the slot d of the sliding piece 6, the latter being connected by means of a tenon f to a rod or bolt g, which engages the keeper h on the lower edge of the frame. This keeper may be fixed or movable. \Vhen movable, it is adjustable by a spring.

On the pin t' is pivoted a two-armed short lever 70, provided with friction-rollers Z and m on its ends and resting with one end on the sliding piece e, while the other end engages the slot 0 in the other sliding piece 19, which is connected by the bolt q to a rod .9, engaging the upper keeper 1".

t indicates a spiral spring, the lower end of which is seated in a socket i mounted or bearing upon the tenon f, projecting from the sliding piece e, while the upper end of the spring encircles'a stud 25, depending from the lower end of the sliding piece 19. It will thus be seen that the normal tendency of the spring is to keep the sliding pieces pressed apart or separated vertically.

The mechanism operates as follows: When in looking position, the two sliding pieces 6 and p are separated by the spiral spring 6- o'. e., the sliding piece p is pressed upwardly, and the other, e, downwardly in such a manner that the bolt-rods g and 5 enter the keepers.

When this device is used for sliding windows or roller-doors, the arrangement 15 horizontal,

and one of the bolt-rods enters in the corresponding slot of the frame on the right and the other on the left. When the handle or the ring is drawn in a direction vertical to the plane of the window or door, this handle turns on the pin b in the manner indicated by the arrow at in Fig. 2 and raises or moves with its pulley c, the sliding piece 6, and therefore also the lower bar. During its movement the sliding piece presses with the end a on the lever-arm, which bears the friction-roller, so that the lever It is turned on the pin i and displaces the sliding piecepand the bolt 5 by means of its friction-roller. By this move ment the bolts are disengaged from the keepers, and the-leaf can be opened, lowered, or raised. When the leaf is to be closed, it is sufficient to press-it back or to lower it, whereby the bevel ends of the bolts g and s bear on the front ends n and o of the keepers h and r and then move against each other and engage the bolts. When the leaf is closed in this simple manner, the spiral spring 15, acting on the sliding pieces 6 and 13, keeps the mechanism in the locking position.

I claim- A locking device consisting in the combi nation with a rotatable lever, of a sliding piece 6, a bar 9 connected with the sliding piece, a second sliding piece 19, a second sliding bar 3, a spring arranged to act upon the said sliding pieces 6 and p to normally keep the same separated, as described, a pivoted lever 70, and the keepers h and r, all arranged for cooperation as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

AUGUST HELLER.

\Vituesses:

WILHELM ZERGER, Anvnsro S. I-Iocun. 

